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118 lines
3.8 KiB
C
118 lines
3.8 KiB
C
/**
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* \addtogroup rime
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* @{
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*/
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/**
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* \defgroup rimequeuebuf Rime queue buffer management
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* @{
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*
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* The queuebuf module handles buffers that are queued.
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*
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*/
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/*
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* Copyright (c) 2006, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \file
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* Header file for the Rime queue buffer management
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#ifndef QUEUEBUF_H_
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#define QUEUEBUF_H_
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#include "net/packetbuf.h"
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/* QUEUEBUF_NUM is the total number of queuebuf */
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#ifdef QUEUEBUF_CONF_NUM
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#define QUEUEBUF_NUM QUEUEBUF_CONF_NUM
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#else
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#define QUEUEBUF_NUM 8
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#endif
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/* QUEUEBUFRAM_NUM is the number of queuebufs stored in RAM.
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If QUEUEBUFRAM_CONF_NUM is set lower than QUEUEBUF_NUM,
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swapping is enabled and queuebufs are stored either in RAM of CFS.
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If QUEUEBUFRAM_CONF_NUM is unset or >= to QUEUEBUF_NUM, all
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queuebufs are in RAM and swapping is disabled. */
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#ifdef QUEUEBUFRAM_CONF_NUM
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#if QUEUEBUFRAM_CONF_NUM>QUEUEBUF_NUM
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#error "QUEUEBUFRAM_CONF_NUM cannot be greater than QUEUEBUF_NUM"
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#else
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#define QUEUEBUFRAM_NUM QUEUEBUFRAM_CONF_NUM
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#define WITH_SWAP (QUEUEBUFRAM_NUM < QUEUEBUF_NUM)
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#endif
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#else /* QUEUEBUFRAM_CONF_NUM */
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#define QUEUEBUFRAM_NUM QUEUEBUF_NUM
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#define WITH_SWAP 0
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#endif /* QUEUEBUFRAM_CONF_NUM */
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#ifdef QUEUEBUF_CONF_DEBUG
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#define QUEUEBUF_DEBUG QUEUEBUF_CONF_DEBUG
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#else /* QUEUEBUF_CONF_DEBUG */
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#define QUEUEBUF_DEBUG 0
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#endif /* QUEUEBUF_CONF_DEBUG */
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struct queuebuf;
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void queuebuf_init(void);
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#if QUEUEBUF_DEBUG
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struct queuebuf *queuebuf_new_from_packetbuf_debug(const char *file, int line);
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#define queuebuf_new_from_packetbuf() queuebuf_new_from_packetbuf_debug(__FILE__, __LINE__)
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#else /* QUEUEBUF_DEBUG */
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struct queuebuf *queuebuf_new_from_packetbuf(void);
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#endif /* QUEUEBUF_DEBUG */
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void queuebuf_update_attr_from_packetbuf(struct queuebuf *b);
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void queuebuf_update_from_packetbuf(struct queuebuf *b);
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void queuebuf_to_packetbuf(struct queuebuf *b);
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void queuebuf_free(struct queuebuf *b);
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void *queuebuf_dataptr(struct queuebuf *b);
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int queuebuf_datalen(struct queuebuf *b);
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linkaddr_t *queuebuf_addr(struct queuebuf *b, uint8_t type);
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packetbuf_attr_t queuebuf_attr(struct queuebuf *b, uint8_t type);
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void queuebuf_debug_print(void);
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int queuebuf_numfree(void);
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#endif /* __QUEUEBUF_H__ */
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/** @} */
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/** @} */
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